The current issue with the plug door is. MCAS is the second sentence. And I'd still consider that a process failure, when engineers only ever tested the upgrade variant AOA indicator and didn't notice the non-upgraded glass cockpit advisory didn't work and nobody is specifically responsible for making sure the code is reviewed.
And oursourcing wasn't new. The here praised 737 NG had parts delivered by subcontractor Ducommun in the early 2000s that were allegedly so defective, they had to be rejected entirely. Except the Boeing of the early 2000s caught it, and late 2010s Boeing didn't.
Not true. The reason MCAS was needed is because of a design issue. Also, if you watch the video, Boeing didn't just outsource manufacturing - they also outsourced the design.